Wrench.



J. ANDERSQN.

WRENCH.

APPLICATION rILnn we. 5, 1912.

1,070,656, Patented Aug. 19, 1913.

COLUMBM PLANouRAPM (10.. WASHINGTON, D. :4

JOHN ANDERSON, OF PORTLAND, CONNECTICUT.

WRENCH.

Application filed August 5, 1912.

Specification of Letters Patent.

Patented Au 19,1913.

Serial No. 713,457.

To all whom it may concern Be it known that I, JOHN ANDERSON, a citizenof the United States, residing at Portland, in the county of Middlesexand State of Connecticut, have invented a new and useful Improvement inWrenches; and I do hereby declare the following, when taken inconnection with the accompanying drawings and the characters ofreference marked thereon, to be a full, clear, and exact. description ofthe same, and which said drawings constitute part of this application,and represent, in-

Figure 1 a plan view of a wrench constructed in accordance with myinvention. Fig. 2 a plan view of one of the members, detached. Fig. 3 asimilar view of the other member. Fig. 4 a sectional view on the linea-b of Fig. 1.

This invention relates to an improvement in wrenches, and particularlyto wrenches comprising two similar members each having a circularknuckle one-half of which projects inward from the inner edge of themembers through which knuckles a screw passes for pivotally connectingthe members together, the object of the invention being to so form theknuckles that the strain and wear is entirely removed from the screw,coupling the members together; and the invention consists in theconstruction hereinafter described and particularly recited in theclaim.

In illustrating my invention, 1 have shown a wrench like that shown inmy application filed February 9, 1912, Serial No. 676,596. As hereinshown, the wrench comprises two members 2, 3, orovided at opposite endswith aws 4: 5, 6 and 7, a screw 8 connected with one member and passingthrough a nut 9 located in a clearance opening 10 formed in the othermember and by which the jaws may be adjusted. The member 2 is formedwith an integral knuckle 11 one-half of which projects inward from theinner edge of the member and is about half the thickness of the member.In the face of this knuckle is a. beveled annular seat 12 surroundingthe screw opening 13. The other member 3 is also provided with a similarknuckle 1 1 provided with a beveled annular rib or projection 15 adaptedto enter the seat 12 formed in the other member. The parts are connectedtogether by a screw 16 passing through the two knuckles, but owing tothe fact that one knuckle is provided with a seat and the other with arib, the strain upon the screw is entirely removed, and the onlyfunction is to hold the two parts in proper relative position, the hingebeing formed by the said annular rib and seat and by beveling the faceof the seat and the face of the rib, the stock is equally dividedbetween the two members and the strain is equalized.

I claim A wrench having two members each when assembled having annularinterengaging projections and grooves which contact throughout theiropposite faces and a screw holding the same in pivotal connection.

In testimony whereof, I have signed this specification in the presenceof two subscrib ing witnesses.

JOHN ANDERSON. Witnesses:

CHARLns B. BROMLEY, Fnnnnnlo C. EARLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

